How do you find the exact value of a sector?
Exact constant expressions for trigonometric values simplify solutions into radical forms which allow further simplification. All values of sine, cosine, and tangent of angles with 3 degree increments are derivable using identities: half-angle, double-angle, addition/subtraction and values for 0 degrees, 30 degrees, 36 degrees, and 45 degrees. ChaCha!
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